Last updated: July 2, 2025
In Rosario de Lerma, Argentina, keeping an eye on the UV Index is crucial for the health and safety of residents and visitors alike. Understanding UV levels is essential not only for preventing painful sunburns but also for protecting long-term skin health. With a Cwb climate, characterized by warm summers and frequent sunshine, the risks associated with UV exposure can elevate, especially during peak hours. Notably, the UV Index peaks at 8 around 1 PM, highlighting the importance of taking protective measures to enjoy the outdoors safely.
Today’s UV index reveals a steady climb as the sun rises, starting from 0 at 7:00 AM and gradually peaking at a robust 8 during 1:00 PM. The sun's intensity reaches its zenith at 12:00 PM, hitting 7, as outdoor enthusiasts should take extra precautions. By mid-afternoon, the index begins to taper off, dropping to 6 at 3:00 PM and further declining to 1 by 6:00 PM. As the day progresses, it’s essential to be mindful of the UV levels, especially between 11:00 AM and 3:00 PM, when the risk of sun damage is significantly higher. Enjoy the sunshine, but remember to wear your sunscreen!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 2 | low | 45 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index exhibits significant seasonal fluctuations, peaking during the winter and early spring months. From January to April, the index remains in the extreme category, with values ranging from 17 to 12 and a consistently short burn time of just 10 minutes. May through August presents a notable decrease, with a shift to very high values between 9 and 10, allowing for longer exposure times of 15 to 25 minutes. As the year progresses into September through November, the UV Index again escalates to the extreme range with indices of 12 to 16 and a reduced burn time of 10 minutes. December returns to the peak at 17. Visitors and residents are strongly advised to practice adequate sun protection during high-risk months, particularly from January to April and September to November, by using sunscreen, wearing protective clothing, and limiting sun exposure to mitigate the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires UVI | 14 | 13 | 11 | 7 | 5 | 4 | 4 | 6 | 8 | 10 | 13 | 14 |
| Rosario UVI | 14 | 13 | 11 | 8 | 5 | 4 | 4 | 6 | 8 | 11 | 13 | 14 |
| Mendoza UVI | 15 | 14 | 12 | 8 | 6 | 4 | 5 | 6 | 9 | 12 | 14 | 15 |
| Cordoba UVI | 15 | 13 | 12 | 9 | 6 | 4 | 5 | 7 | 9 | 12 | 14 | 15 |
| San Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |
| Rosario de Lerma | 17 | 16 | 15 | 12 | 9 | 6 | 8 | 10 | 12 | 15 | 16 | 17 |